Insulated ventilating connecter



March 31, 1925. 1,531,522

L. STEINBERGER INSULATED VENTILATING CONNECTER Filed Oct. 12. L918 20 INVENTOR GkL Patented Mar. 31, 1925.

UNITED STATES LOUIS STEINBERGE'R, OI BROOKLYN, NEW YORK.

INSULATED VENTILATING GONNECTER.

Application filed October 12, 1918. Serial No. 257,885,

To all whom it may concern:

Be it known that I, LoUIs STEINBERGER, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, State of New York, have invented certain new and useful Improvements in Insulated Ventilating Connectors, of which the following is a specification.

My invention relates to insulated ventilating connecters for terminals, and particularly to terminals which operate upon high frequency and high voltage systems.

One of the objects of my invention is to provide a high potential insulated connecter so constructed that when used for very high voltage service, the concentration of electrical strains and stresses within and upon the insulator, which otherwise tend to destroy the insulation, will be substantially prevented.

Another object of the invention is to provide an insulated conductor so that when used with high frequency currents the well known so called skin effect on the surface of the insulated conductor will be so distributed that the current will not penetrate the conductor but will move along the surface thereof.

Another object of my invention is to provide a conductor with a plurality of conducting insulated surfaces, and a combined support and electrical distributing member to minimize the destructive effects upon the insulating material resulting from a concentration of electrical stresses and strains within or upon the body of insulating material.

Another object of the invention is to construct an insulated connector so that the interior of the insulator will be provided with as large a cooling surface as possible relative to the size of any given insulator, so that when the heat due to the current, passes through the insulating material and reaches the walls of the cooling chamber, the large amount of cool air contained therein w1ll very rapidly cool down the side walls thereof lator will be cooled by a ventilating structure which permits the entrance of the cool air and the dissipation of the heat, the said ventilating structurebeing enlarged in the centralportion to form an air reservoir.

Another object is to so construct an insulated connector that the heat which maybe generated within the body portion of the insulator may be dissipated, and the construc tion will be such that the electrical stresses and strains that may develop within the insulator will be distributed within the inter or thereof, and at the same time the interior will becooled by a ventilating structure consisting of a substantial air reservoir open to the atmosphere to further permit the dissipation of the heat therefrom.

Ot erobjeots will appear from the following specification and claims.

Insu1ated conductors for terminals for high frequency or high voltage currents are usually supported at or near their central portions upon covers of tanks or roofs of uild ngs, and to this end I have provided a combined support and electrical distributmg member which tends to distribute the electro-static stresses at the point of support so that the concentration of the electrical strains and stresses will be effectively prevented. By the utilization of structures embodyng my invention a great saving of insulating material is effected, for otherwise it would be necessary to have a very great thickness of dielectric material to resist the stresses imposed upon it which emanate from the high frequency or high voltage conductors. The insulated conductors embodying my invention will be reclu'ded from breaking down and from ing destroyed by preventing the concentration of the electrostatic strains and stresses.

By the use of my invention undue or abnormal concentration of electro-static lines of force is precluded from forming on the connector and therefore these connecters are very effectivefor use when the conductors or terminals formi parts of lines carrying very high frequency or very high voltage currents.

Fig. 1 is a view partly in vertical section and partlymin elevation of an insulated eonnecter em dying my invention.

Fig. 2 is a section on line 2-2 of Fig. 1.

The insulator body may be of any usual form and may be constructed of any suitable having anges 11- In the central portion of the insulating body there is molded a ring shaped support 13 which is 1 provided with longitudinally extending flanges 14 and 15 beaded at 13" and 13 forming a ring, the inner surface of which is designated at 16.

frictional Suitable bolt or rivet holes 17 are provided in the portion 18 of the support which extends radially outward from the central portion of the insulating body so that the insulated connecter may beproperly secured and supported thereby. A hollow metallic conducting member or tube 20 is molded in the center of the insulating body and extends longitudinally thereo The ends of this hollow conducting member or tube are screw threaded and project a short distance beyond the ends of the insulating body at 21 and 22.-

.Glamping elements 28 and 29 of the re-' spective terminals are each provided at one end withholes with which to fit over. the ends of the tube 20 and thus rest on the respective washers 26 and 27 which are first placed over the ends of the tube. These clamping elements are then secured to the screw threaded plugs by means of nuts 32 and 33 and lock nuts 32 and 33, as shown. Cavities 34; and 34: are provided in the opposite ends of the terminal clamps and the exposed ends w of the insulated line wires W are then fitted in the cavities and secured therein by any suitable way as by. solder or by any other suitable means.

As shown there are secured to the insulated conductor 20 a plurality of concentrically arranged metallic hollow conductors or tubes, each tube differing from the other in length and in diameter and all of which are secured to the central tube in the manner hereinafter described.

The conducting washers or discs 31 and 32 are fitted over the central tube and secured at suitable distances near the center thereof by solder, or they may be held in position by friction due to careful machining.

The first tube of larger diameter than the conductor 20 is secured at each end to the discs 31 and 32 also by solder or by frictional engagement, as clearly shown.

The next tube 40 is secured at its ends to conducting washers or discs 41 and 42, which discs are secured by solder or frictional engagement tothe tubes 30, as shown.

An outer tube is secured by solder or engagement to conducting washers or discs 51 and 52, which in turn rooves 12 for the purpose of increasare secured to the tube 40 b similar means. The outer tube is substantially the length of the ring 13 which is a portion of the support.

A reservoir is formed within the tubes as above mentioned by reason of the fact that holes 60, and 80 are provided in the respective tubes 20, 30 and 40, all within the confines of the respective discs or washers 31, 32; 41', 42; 51, 52; and thereby forming a reservoir which is filled with air which not only is an insulator but also acts as a coolin means for the central portion of the insu ator structure, the air reservoir being open to atmosphere through both ends of the tube20, as clearly shown.

The lurality of conducting tubes, as above escribed are positioned. within the ring shaped supporting member and the insulating body is then-formed'by molding the insulating material around and about the inner portion of the ring shaped memher and the assembled nest of conducting tubes.

The rin shaped'supporting members of the form s own also tend to distribute the electrical stresses so that they will not be concentrated in the center of the insulator near the support thereof and will thereby minimize or eliminate the danger of breaking down the insulator body.

In addition to these features the air reservoir will be filled with a comparatively large amount of air so that when the heat due to the current, passes through the insulating material and reaches the walls of the air reservoir, a large amount of cool air contained in the reservoir W111 very rapidly cool down the side walls thereof and thus maintain the insulating material in good working condition.

The tubes as above described are also so constructed with respect to the air reservoir as to more readily admit of the cool air and the escape of the hot air.

As changes of construction could be made within the scope of my invention, it is intended that all matter contained in theabove description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having now described my invention what I claim as new and desire to secure by Letters Patent is:

1. A device of the class described which comprises, a body of insulating material and a hollow conductor extending therethrough and having an enlarged portion within said body of insulating material communicating to and from the atmosphere through said conductor.

2. In a device of the class described, an insulating body'provided with a tubular conducting member extending therethrough, said conducting member being provided with 1 an enlarged portion between the ends theretherein, a hollow con ucting member within said stress distributing member, said conducting member being provided with an enlarged plortion to form a reservoir within the ring-s aped stress distributing member, said reservoir communicating to and from the exterior of said insulating body.

4. In a device of the class described, an insulating body, a plurality of hollow conducting members concentrically arranged with respect to each other and molded within theinsulating body, the innermost hollow conducting member extending from the ends of the insulating body and the conducting members outside of said innermost member being hermetically sealed to each other forming a reservoir, the members within the outermost member havin vents between adjacent chambers formed y said members.

5. In a device of the class described, an insulating body, a ring-shaped stress distributing member molded therein, a plurality of hollow conducting members in the center of said insulatingbody and extending longitudinally thereof, means for securing the one to the other to form concentric annular chambers, the outer conducting member bein impervious and the inner conducting mem rs each being provided with vents leading to the s ace bounded by the outer conducting member.

6. In a device of the class'described, an

insulating bod provided with a plurality of concentrical y arranged tubular conductingmembers molded therein centrally thereof, the outer tubular conducting member beilkg secured at its ends to the inner tubular con ucting member to form a space-therebetween, the walls of the inner conducting member provided with vents leading to the space confined by the outer conducting member.

7. In a device of the class described, an insulating body, a tubular conducting member molded therein centrally thereof, a second'tube of larger diameter and hermetically secured thereto at its ends, an outer tube of still larger diameter than the second named tube extending concentrically thereof and hermetically secured thereto at its ends, the walls of the inner tubes provided with vents leadin to the space confined by the outer tube, t e said tubes being molded within the central portion of the insulating body.

8. In a device of the class described, a series of concentrically arranged hollow conducting members, the outer conducting members bein of larger diameter than the central conducting member and rigidly secured thereto, at their ends, to form an enclosed chamber, a body of insulating material molded around said hollow conducting members, the walls of the inner conducting members having vents leading to the chamber confined by the outer conducting member.

In witness whereof I have hereunto set my hand at the borough of Manhattan, city and State of New York, this fourth day of October, 1918.

LOUIS STEINBERGER. 

